Passage A: By containers made by concrete. B: By containers made by steel. C: By using reservoirs formed by dirt walls. D: By using reservoirs formed by wood.

people build dams and levees to control the flooding. These projects, as well as reservoirs and wells, were called ( ).

whichof the following is not the source of surface water? A: rivers B: ice C: reservoirs D: lakes

There are many calculation methods for petroleum reserves in reservoirs, which can be roughly divided into static methods and dynamic methods.

petroleum mud logging technology is characterized by multi-parameters, large amount of information, fast and real-time on site, and its main functions are ( ). A: discover oil and gas reservoirs in time B: evaluate oil and gas reservoirs while drilling C: provide resource evaluation parameters D: ensure safe drilling

A Carnot refrigerator is operated between two reservoirs and the cold<br/>reservoirs is at temperature of 270K. If in each cycle the<br/>refrigerator receives 415 J of heat energy from the reservoir at 270K<br/>and 77 J work is needed to be done on the working substance. The<br/>quantity of the heat energy delivered to the hot reservoir is (). A: 90J B: 338 J C: 492J D: 578J

The main task of testing and formation testing technology is ( ). A: discovery and confirmation of petroleum potential B: evaluate petroleum reservoirs C: identify reservoir properties D: obtain production capacity and development related data